President Trump blasted former Vice President Joe Biden in a television interview on Fox News Thursday, calling him “not the brightest light bulb.”

Trump made the attack during an appearance on Sean Hannity’s show, hours after Biden announced he would enter the 2020 Democratic presidential primary.

“I’ve known Joe over the years. He’s not the brightest light bulb in the group, I don’t think,” Trump said of Biden during the phone interview.

“He’s a name that they know,” he said, referring to Democrats.

Trump then criticized Biden’s campaign launch video, in which the former vice president showed images of the 2017 white supremacist rally in Charlottesville, Va. and said the 2020 election is a “battle for the soul of this nation.”

Trump pointed to the economy, his overhaul of Veteran Affairs medical services and his beefing up of the military as evidence of his accomplishments as president.

“The way the world is today is we have a strong military,” Trump said.

“We have choice for our veterans. They have choice now. Instead of waiting on line all day long, all week long all month long. They have choice they can go out to a private doctor we pay the bill. They don’t have to die waiting online,” he added.